Showing papers in "Composites Science and Technology in 2004"

TL;DR: In this article, double-wall carbon nanotubes (DWCNTs) and an epoxy matrix were produced by a standard calandering technique and a very good dispersion of both DWCNT and carbon black (CB) was observed.

TL;DR: SiC-based ceramic matrix composites, consisting of carbon or SiC fibers embedded in a SiC-matrix, are tough ceramics when the fiber/matrix bonding is properly optimized through the use of a thin interphase.

TL;DR: The effects of concentration and modification of fiber surface in sisal/oil palm hybrid fiber reinforced rubber composites have been studied in this paper, where the rubber/fiber interface was improved by the addition of a resorcinol-hexamethylene tetramine bonding system.

TL;DR: In this article, the effect of fiber alignment and alkalization on the mechanical properties of the composites were measured to observe the effects of fibre alignment and alkylation on fiber properties.

TL;DR: In this paper, the use of aligned chemical vapour deposition (CVD)-grown multi-wall carbon nanotubes as a conductive filler in an epoxy system based on a bisphenol-A resin and an amine hardener was explored.

TL;DR: In this paper, the influence of functionalisation of multi-wall carbon nanotubes (MWCNTs) on the thermo-mechanical properties of MWCNT/epoxy-composites was investigated.

TL;DR: In this paper, the use of different types of polymeric matrix composites in hard tissue replacement applications is examined.The review presents the actual state of the art in the fields of bioinert composites for permanent applications, biodegradable matrix composite for temporary applications and the emerging area of injectable composites.

TL;DR: In this paper, the composite panels made by room temperature cure with natural fiber reinforcement of about 10-50 wt% increased the flexural modulus to a range between 1.5 and 6 GPa depending on the nature of the fiber mat.

TL;DR: In this paper, a plan of experiments, based on the techniques of Taguchi, was established considering drilling with prefixed cutting parameters in a hand lay-up GFRP material.

TL;DR: In this paper, the structural damping characteristics of polymeric composites containing single-walled carbon nanotubes (SWNTs) were investigated, with a focus on analyzing the interfacial interaction between the CNT and the resin materials.

TL;DR: In this article, the effect of seawater immersion on the durability of reinforced polymer composites was experimentally investigated and the results showed that the composites experienced significant moisture absorption and suffered chemical degradation of the resin matrix and fibre/matrix interphase region.

TL;DR: In this article, an energy argument is presented that picture frame results should be normalised with respect to a characteristic length rather than area, and a novel normalisation procedure for bias extension testing is proposed that allows direct comparison of bias extension and picture frame result.

TL;DR: In this article, the effect of gradient structure on tissue response and osteogenesis in FGM implant was evaluated, and the results demonstrated that the tissue reaction occurred gradiently in response to the graded structure of FGM, which implies the possibility to control the tissue response through the gradient function of FGF.

TL;DR: In this article, a tensile test was carried out on glass/polypropylene specimens made in-home, and acoustic emissions were recorded from these tests, and the hypothesis is that each micro mechanical event will have one distinctive waveform as fingerprint.

TL;DR: The World Wide Failure Exercise (WWFE) contained a detailed assessment of 19 theoretical approaches for predicting the deformation and failure response of polymer composite laminates when subjected to complex states of stress as mentioned in this paper.

TL;DR: It is concluded that the HAp/Col composite can be successfully utilized as an artificial bone material in both the medical and dental fields as an in vivo filler and in vitro tissue regenerator.

TL;DR: In this paper, the failure conditions for a unidirectional lamina are derived based on the Failure Mode Concept (FMC) which takes into account the material-symmetries (by the application of invariants) of the UD-lamina homogenized to a material, and on a strict failure mode thinking.

TL;DR: In this article, pullout experiments were performed at the nanoscale using an atomic force microscope, to assess the interfacial adhesion between multi-walled carbon nanotubes and a matrix of polyethylene-butene.

TL;DR: In this article, mean-field Eshelby-based homogenization techniques for multi-phase composites have been studied and the results of these methods have been validated against experimental data or finite element results.

TL;DR: In this paper, the high velocity impact response of a range of novel aluminium foam sandwich structures has been investigated using a nitrogen gas gun, and it has been shown that these novel systems offer excellent energy absorbing characteristics under high-velocity impact loading conditions.

TL;DR: In this article, the concept of multi-chain digital element analysis is established, where each fiber is modeled as a frictionless pin-connected rod element chain, defined as "digital chain".

TL;DR: In this article, a resin transfer molding (RTM) process was used to produce fiber mat with a moisture content of 4.3% at 50% relative humidity, and the fiber mat was dry in the mold under vacuum to reach a moisture level of around 1.2%.

TL;DR: In this article, a novel approach was developed to measure in-situ chemical shrinkage of epoxy resins at the temperature of cure, during which the resins pass through liquid, rubbery and glassy states.

TL;DR: In this paper, a non-destructive X-ray imaging technique was used to determine internal structure in a polymer foam reinforced with short fibers, which is known as micro-CT (for computerized tomography).

TL;DR: In this article, a critical review has been performed of the published experimental research concerning delamination onset and growth in composite laminate interfaces of different lay-ups under single-mode loadings, and it was found that the traditional fracture toughness characterization by unidirectionally reinforced composite tests can lead to marked under- or overestimation of material resistance to crack growth.

TL;DR: In this paper, the authors present supplementary conclusions from an international exercise to establish the current status of failure prediction theories for polymer composite laminates and compare the performance of the new theories with that of the other fifteen theories using an identical methodology.

TL;DR: In this paper, the authors discuss the problem of normalizing the reaction force of woven fiber reinforced composites from the energy point of view with the assistance of numerical simulations, and present experimental results designed to address this problem.

TL;DR: In this article, the use of interface finite elements and a damage model is proposed to predict damage due to low velocity impact in carbon-epoxy (0 4, 90 4 ) s laminates.

TL;DR: In this paper, wood fiber reinforced polypropylene composites of different fiber content (40, 50 and 60% by weight) have been prepared and wood fibres (hard and long fibre) were treated with compatibiliser (MAH-PP) to increase the interfacial adhesion with the matrix to improve the dispersion of the particles and to decrease the water sorption properties of the final composite.

TL;DR: In this paper, the effect of particle shape on the thermal conductivity of aluminum nitride powder filled polyimide (AlN/PI) composites was discussed and a modified equation was proposed for predicting the effective thermal conductivities of the composites.